The Democratic demand for a bureau probe is one more delaying tactic.

Democrats have succeeded in delaying a vote on Brett Kavanaugh’s nomination until the Senate holds a public hearing with him and his accuser scheduled for Monday, but they’re still not happy. Now they don’t even want to hold that hearing until the FBI investigates the alleged sexual assault that happened when the two were in high school.

“The FBI conducted a background check on Judge Kavanaugh before these allegations were known,” Minority Leader Chuck Schumer said Monday on the Senate floor. “It is now the FBI’s responsibility...